Polls open for the final round of Peru's presidential elections on Sunday with voters set to choose the country's ninth leader in 10 years. Sunday's presidential runoff in Peru pits Keiko Fujimori against Roberto Sanchez in an election marked by social tension, rising crime and declining confidence in political institutions. Key points and original sources are listed below.

• Polls open for the final round of Peru's presidential elections on Sunday with voters set to choose the country's ninth leader in 10 years. Following a first-round vote marred by logistical problems and fraud allegations, voters will choose between conservativ...S1

• Sunday's presidential runoff in Peru pits Keiko Fujimori against Roberto Sanchez in an election marked by social tension, rising crime and declining confidence in political institutions.S2

• Sunday's presidential runoff in Peru pits Keiko Fujimori against Roberto Sanchez in an election marked by social tension, rising crime and declining confidence in political institutions.S3